A young Vallejo woman stumbled upon a macabre scene Wednesday when she came home to find her uncle dead with a severed hand.

Vallejo officers were called to the house in the 2200 block of Garnet Drive at about 3 p.m. and found the 44-year-old Vallejo man dead at the scene, police said. Officers described the scene as “grisly.”

The man had a history of being put on mental evaluation holds and lived at a care home across town, police said.

For an unknown reason, he went to his brother”s house on Garnet Drive and finding no one home, grabbed a butcher”s knife, police said.

The man then attempted to cut off his left arm before succeeding in cutting off his let hand, police said.